When to Plant Sunchoke in Wexford County, MI
Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.
Wexford County, Michigan is in USDA Zone 5a. The average last spring frost is May 17 and the first fall frost is October 4, giving you a growing season of approximately 140 days.
At an elevation of 1,167 feet, Wexford County receives approximately 35.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Sunchoke to ensure they mature before fall.
Wexford County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-6.8
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Sunchoke Planting Timeline — Wexford County, MI
Sunchoke Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 31 | May 31 – Jun 14 |
| Harvest | September 20 | Sep 20 – Nov 15 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
110–150 days
Soil pH
6 – 7.5
USDA Zone
Zone 5a
Growing Season
140 days
Growing Tips for Wexford County
Plant tubers 4 inches deep in early spring. Contain plants with barriers as they spread aggressively. Harvest after frost or leave in ground and dig as needed through winter.
Companion Planting
Good Companions
Level Up Your Garden
Sunchoke in Other Locations
Frequently Asked Questions
When should I plant Sunchoke in Wexford County, MI?
Wexford County is in Zone 5a with an average last frost of May 17. Plan your Sunchoke planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wexford County, MI?
Wexford County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 17 and first fall frost is October 4.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Wexford County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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